I have two humidifiers running in attempt to combat some severe sinus issues, likely caused by the very dry winter in Boston. I live in an a 450 sq ft studio apartment.
They have been running for about 8 hours. My AcuRite Indoor Humidity monitor showed an initial humidity of 41%, currently at 46%, but hasn't increased for a few hours.
Is humidity of > 50% attainable/desired? How long should it take? Are these humidifers sufficient or should I consider a different one?